diff --git a/libraries/levmar/Makefile.SBo b/libraries/levmar/Makefile.SBo
new file mode 100644
index 0000000000..d9fb5f4521
--- /dev/null
+++ b/libraries/levmar/Makefile.SBo
@@ -0,0 +1,46 @@
+# Makefile.sbo: sane Makefile for levmar on Slackware
+# dbs 2017-03-15
+
+# Get these from Makefile.so
+MAJ=2
+MIN=2
+
+ODIR=build
+
+CONFIGFLAGS=-ULINSOLVERS_RETAIN_MEMORY
+BUILDFLAGS=-funroll-loops -Wall $(CONFIGFLAGS) $(CFLAGS)
+
+LIBOBJS=$(ODIR)/lm.o $(ODIR)/Axb.o $(ODIR)/misc.o $(ODIR)/lmlec.o $(ODIR)/lmbc.o $(ODIR)/lmblec.o $(ODIR)/lmbleic.o
+LIBSRCS=lm.c Axb.c misc.c lmlec.c lmbc.c lmblec.c lmbleic.c
+
+LAPACKLIBS=-llapack -lblas
+LIBS=$(LAPACKLIBS) -lm
+
+$(ODIR)/liblevmar.so.$(MAJ).$(MIN): $(LIBOBJS)
+	$(CC) -shared -Wl,-soname,liblevmar.so.$(MAJ) -o $(ODIR)/liblevmar.so.$(MAJ).$(MIN) $(LIBS) $(LIBOBJS)
+
+$(ODIR)/%.o : %.c
+	$(CC) $(BUILDFLAGS) -c $< -o $@
+
+$(ODIR)/lm.o: lm.c lm_core.c levmar.h misc.h compiler.h
+$(ODIR)/Axb.o: Axb.c Axb_core.c levmar.h misc.h
+$(ODIR)/misc.o: misc.c misc_core.c levmar.h misc.h
+$(ODIR)/lmlec.o: lmlec.c lmlec_core.c levmar.h misc.h
+$(ODIR)/lmbc.o: lmbc.c lmbc_core.c levmar.h misc.h compiler.h
+$(ODIR)/lmblec.o: lmblec.c lmblec_core.c levmar.h misc.h
+$(ODIR)/lmbleic.o: lmbleic.c lmbleic_core.c levmar.h misc.h
+
+clean:
+	@rm -f $(LIBOBJS)
+
+cleanall: clean
+	@rm -f $(ODIR)/liblevmar.so.$(MAJ).$(MIN)
+
+depend:
+	makedepend -f Makefile $(LIBSRCS)
+
+install: $(ODIR)/liblevmar.so.$(MAJ).$(MIN)
+	install -Dpm 644 levmar.h $(DESTDIR)/usr/include/levmar/levmar.h
+	install -Dpm 755 build/liblevmar.so.$(MAJ).$(MIN) $(DESTDIR)/usr/lib$(LIB_SUFFIX)/liblevmar.so.$(MAJ).$(MIN)
+	ln -rs $(DESTDIR)/usr/lib/liblevmar.so.$(MAJ).$(MIN) $(DESTDIR)/usr/lib$(LIB_SUFFIX)/liblevmar.so.$(MAJ)
+	ln -rs $(DESTDIR)/usr/lib/liblevmar.so.$(MAJ).$(MIN) $(DESTDIR)/usr/lib$(LIB_SUFFIX)/liblevmar.so
diff --git a/libraries/levmar/README b/libraries/levmar/README
new file mode 100644
index 0000000000..85388f0795
--- /dev/null
+++ b/libraries/levmar/README
@@ -0,0 +1,4 @@
+levmar (Levenberg-Marquardt nonlinear least squares algorithm)
+
+GPL native ANSI C implementations of the Levenberg-Marquardt optimization
+algorithm, usable also from C++, Matlab, Perl, Python, Haskell and Tcl.
diff --git a/libraries/levmar/levmar.SlackBuild b/libraries/levmar/levmar.SlackBuild
new file mode 100644
index 0000000000..27ead5ad71
--- /dev/null
+++ b/libraries/levmar/levmar.SlackBuild
@@ -0,0 +1,89 @@
+#!/bin/sh
+
+# Slackware build script for levmar
+
+# Copyright 2017 David Spencer, Baildon, West Yorkshire, U.K.
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+PRGNAM=levmar
+VERSION=${VERSION:-2.6}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-$VERSION.tgz
+cd $PRGNAM-$VERSION
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+mkdir -p build
+make -f $CWD/Makefile.SBo \
+  CFLAGS="$SLKCFLAGS"
+make -f $CWD/Makefile.SBo install \
+  DESTDIR=$PKG \
+  LIB_SUFFIX="$LIBDIRSUFFIX"
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a LICENSE README.txt $PKG/usr/doc/$PRGNAM-$VERSION
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/libraries/levmar/levmar.info b/libraries/levmar/levmar.info
new file mode 100644
index 0000000000..2e9c5d6cea
--- /dev/null
+++ b/libraries/levmar/levmar.info
@@ -0,0 +1,10 @@
+PRGNAM="levmar"
+VERSION="2.6"
+HOMEPAGE="http://users.ics.forth.gr/~lourakis/levmar/"
+DOWNLOAD="https://downloads.sourceforge.net/slackbuildsdirectlinks/levmar/levmar-2.6.tgz"
+MD5SUM="16bc34efa1617219f241eef06427f13f"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES="lapack"
+MAINTAINER="David Spencer"
+EMAIL="baildon.research@googlemail.com"
diff --git a/libraries/levmar/slack-desc b/libraries/levmar/slack-desc
new file mode 100644
index 0000000000..d81b888b47
--- /dev/null
+++ b/libraries/levmar/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+      |-----handy-ruler------------------------------------------------------|
+levmar: levmar (Levenberg-Marquardt nonlinear least squares algorithm)
+levmar:
+levmar: GPL native ANSI C implementations of the Levenberg-Marquardt
+levmar: optimization algorithm, usable also from C++, Matlab, Perl, Python,
+levmar: Haskell and Tcl.
+levmar:
+levmar: http://users.ics.forth.gr/~lourakis/levmar/
+levmar:
+levmar:
+levmar:
+levmar: